<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .div{
            width: 1000px;
            height: 500px;
            background-color: rgba(255, 192, 203,0.9);
            background-image: url(/img.jpg);
            background-repeat: no-repeat;
            background-position: center center;
            /* background-size: cover; */
            /* background-size: contain; */
            /* background-size: auto; */
            /* background-size: 100% 100%; */
            /* background-size: 500px 300px; */

            opacity: 1;
        }

    </style>
</head>
<body>
    <div class="div">
        不凡学院
    </div>
</body>
</html>